Home / 215,420-357,781

Finding the Third Proportional to 215,420 and 357,781

Calculator

Solution

The third proportional to 215,420 and 357,781 is: 594,221.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,420 : 357,781 = 357,781 : x
  2. Step 2: Convert to fraction form
    215,420/357,781 = 357,781/x
  3. Step 3: Cross multiply
    215,420x = 357,781 × 357,781
  4. Step 4: Simplify right side
    215,420x = 128,007,243,961
  5. Step 5: Solve for x
    x = 128,007,243,961/215,420
  6. Step 6: Final answer
    x = 594,221.72

Related Problems

Find third proportional to 107,710 and 178,890.50
Half scale
Find third proportional to 430,840 and 715,562
Double scale
Find third proportional to 215,422 and 357,784
Similar ratio
Find third proportional to 323,130 and 536,671.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.